An orange solid A  on heating gave a green residue B. a colourless gas C and water vapour. The dry gas C' on passi

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Q 2637356282.     An orange solid A  on heating gave a green residue B. a colourless gas C and water vapour. The dry gas C' on passing over heated Mg gave a white solid D. D on reaction with water gave a gas E which formed dense white fumes with HCl. Identify A to E and give the reaction involved.
JEE 1993

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